EP 4168625 A1 20230426 - BARRIER PAPER OR BOARD
Title (en)
BARRIER PAPER OR BOARD
Title (de)
BARRIEREPAPIER ODER -PLATTE
Title (fr)
PAPIER OU CARTON PROTECTEUR
Publication
Application
Priority
- EP 20181691 A 20200623
- EP 2021067213 W 20210623
Abstract (en)
[origin: WO2021260043A1] A process for improving the barrier properties of a barrier layer in a pulp-based substrate layer having a barrier layer, comprising the steps of providing a pulp-based substrate layer having a layer of an aqueous barrier composition applied to it, and then drying the pulp- based substrate layer having a layer of aqueous barrier composition applied to it to form a pulp-based substrate layer having a barrier layer, such that the moisture content of the pulp- based substrate layer having a barrier layer is below 2.5 % by weight, preferably below 2 % by weight, based on the weight of the pulp-based substrate layer having a barrier layer.
IPC 8 full level
D21H 19/02 (2006.01); D21H 19/08 (2006.01); D21H 19/82 (2006.01); D21H 27/10 (2006.01)
CPC (source: EP US)
B65D 65/42 (2013.01 - US); D21H 19/02 (2013.01 - EP); D21H 19/08 (2013.01 - EP US); D21H 19/12 (2013.01 - US); D21H 19/82 (2013.01 - EP); D21H 19/824 (2013.01 - US); D21H 21/16 (2013.01 - US); D21H 21/38 (2013.01 - US); D21H 27/10 (2013.01 - EP US); B65D 2565/387 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021260043 A1 20211230; AU 2021295285 A1 20230216; BR 112022025173 A2 20221227; CA 3180920 A1 20211230; EP 4168625 A1 20230426; MX 2022016364 A 20230130; US 2023313466 A1 20231005; ZA 202300492 B 20240530
DOCDB simple family (application)
EP 2021067213 W 20210623; AU 2021295285 A 20210623; BR 112022025173 A 20210623; CA 3180920 A 20210623; EP 21734160 A 20210623; MX 2022016364 A 20210623; US 202118012476 A 20210623; ZA 202300492 A 20230111